## Before
<img width="1452" height="709" alt="image"
src="https://github.com/user-attachments/assets/cd384ffa-cbe6-49d5-a807-ca8d580f55a9"
/>
<img width="1074" height="452" alt="image"
src="https://github.com/user-attachments/assets/720d38db-3495-4032-8831-17d24ec6a7e7"
/>
## After
<img width="1421" height="865" alt="image"
src="https://github.com/user-attachments/assets/2275c996-c895-4800-8324-2aa2ddfddd43"
/>
<img width="1348" height="870" alt="image"
src="https://github.com/user-attachments/assets/3e1a891d-6db0-4cbd-870a-2a5bbde4929d"
/>
## Summary
Adds typed application variables with optional select **options**. This
is the other half of #22059, split out from the custom-settings-tab
removal.
## Changes
- **Shared types**: `ApplicationVariable` / `ServerVariables` gain an
optional `type` (a `FieldMetadataType` subset — `TEXT`, `BOOLEAN`,
`NUMBER`, `DATE`, `SELECT`, `MULTI_SELECT`, `RAW_JSON`, `RICH_TEXT`,
`ARRAY`, …) and select `options`. New
`serializeApplicationVariableValue` /
`deserializeApplicationVariableValue` helpers convert typed values
to/from the encrypted string storage.
- **Server**: `type`/`options` columns on `applicationVariable` and
`applicationRegistrationVariable` (entities + DTOs), a fast `2-17`
instance command, manifest processing via the serialization helpers, and
a `QueryDeepPartialEntity` cast where the manifest JSON column is
persisted.
- **Frontend**: a polymorphic `SettingsApplicationVariableInput` that
renders the native `Form*` field component for each type (boolean,
number, date/date-time, select, multi-select, array, raw JSON, rich
text, text); fragment/query updates to fetch `type`/`options`.
- **SDK**: `defineApplication` validates that `SELECT`/`MULTI_SELECT`
variables declare non-empty `options` at build time (since `options` is
kept structurally optional for TypeORM/SDK compatibility).
Variables default to `TEXT` when no type is given, so existing manifests
are unaffected.
## Notes
The generated GraphQL artifacts (`type`/`options` on the variable types)
are regenerated by codegen; that change accompanies this PR.
https://claude.ai/code/session_013Z7UB35V2mvUozh55QHG23
---
_Generated by [Claude
Code](https://claude.ai/code/session_013Z7UB35V2mvUozh55QHG23)_
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martmull
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